[all-commits] [llvm/llvm-project] f551fb: [Debug-info][InstrRef] Avoid an unnecessary map or...

[Jeremy Morse via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f551fb96c7fbe38628f049bfe0e48a6943ee341f
      https://github.com/llvm/llvm-project/commit/f551fb96c7fbe38628f049bfe0e48a6943ee341f
  Author: Jeremy Morse <jeremy.morse at sony.com>
  Date:   2021-07-09 (Fri, 09 Jul 2021)

  Changed paths:
    M llvm/include/llvm/CodeGen/MachineFunction.h
    M llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp
    M llvm/lib/CodeGen/MIRPrinter.cpp
    M llvm/lib/CodeGen/MachineFunction.cpp

  Log Message:
  -----------
  [Debug-info][InstrRef] Avoid an unnecessary map ordering

We keep a record of substitutions between debug value numbers post-isel,
however we never actually look them up until the end of compilation. As a
result, there's nothing gained by the collection being a std::map. This
patch downgrades it to being a vector, that's then sorted at the end of
compilation in LiveDebugValues.

Differential Revision: https://reviews.llvm.org/D105029